제출 #646414

#제출 시각아이디문제언어결과실행 시간메모리
646414inksamuraiSažetak (COCI17_sazetak)C++17
64 / 160
27 ms19212 KiB
#include <bits/stdc++.h> using namespace std; #define rep(i,n) for(int i=0;i<n;i++) #define rng(i,c,n) for(int i=c;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define fi first #define se second #define pb push_back #define sz(a) (int)a.size() #define vec(...) vector<__VA_ARGS__> #define _3dSgv16 ios::sync_with_stdio(0),cin.tie(0) typedef long long ll; using pii=pair<int,int>; using vi=vector<int>; void print(){cout<<'\n';} template<class h,class...t> void print(const h&v,const t&...u){cout<<v<<' ',print(u...);} // e signed main(){ _3dSgv16; int n,k; cin>>n>>k; assert(n<=5e6); vi usd(n+1,0); rep(i,k){ int v; cin>>v; for(int j=v;j<=n;j+=v){ usd[j]=1; } } usd[n]=1; usd[0]=1; int ans=0; rng(i,1,n+1){ if(usd[i] and usd[i-1]){ ans+=1; } } print(ans); }
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